refactor(web): use encoding_rs for text encoding (#10844)

This commit removes all JS based text encoding / text decoding. Instead
encoding now happens in Rust via encoding_rs (already in tree). This
implementation retains stream support, but adds the last missing
encodings. We are incredibly close to 100% WPT on text encoding now.

This should reduce our baseline heap by quite a bit.

1 files changed, 4 insertions, 3 deletions

diff --git a/extensions/web/internal.d.ts b/extensions/web/internal.d.ts
index bfce3e1e1..ebfa0d39e 100644
--- a/extensions/web/internal.d.ts
+++ b/extensions/web/internal.d.ts
@@ -43,6 +43,8 @@ declare namespace globalThis {
         result: string;
         position: number;
       };
+      forgivingBase64Encode(data: Uint8Array): string;
+      forgivingBase64Decode(data: string): Uint8Array;
     };
 
     declare namespace mimesniff {
@@ -65,9 +67,8 @@ declare namespace globalThis {
     };
 
     declare var base64: {
-      byteLength(b64: string): number;
-      toByteArray(b64: string): Uint8Array;
-      fromByteArray(uint8: Uint8Array): string;
+      atob(data: string): string;
+      btoa(data: string): string;
     };
   }
 }